| Date | Age | Event | Bishop | Title | Current Title |
| 3 Jul | | Born | Flavien-Abel-Antoinin Hugonin † | Thodure | Bishop of Bayeux (-Lisieux), France |
| 4 Jul | 49.8 | Appointed | Gustave-Maximilien-Juste de Croÿ-Solre † | Cardinal, Archbishop of Rouen, France |
| 6 Jul | 55.1 | Ordained Bishop | François-Antoine Arbaud † | Bishop of Gap, France |
| Ordained Bishop | Robert Laffan † | Archbishop of Cashel (-Emly), Ireland |
| 74.2 | Ordained Bishop | Fortuné-Charles de Mazenod † | Bishop of Marseille, France | Bishop Emeritus |
| 66.6 | Ordained Bishop | Jean-Baptiste-François-Nicolas Millaux † | Bishop of Nevers, France |
| 64.5 | Ordained Bishop | André Molin † | Bishop of Viviers, France |
| 13 Jul | 56.0 | Ordained Bishop | Antoine-Jacques de Chamon † | Bishop of Saint-Claude, France |
| 44.5 | Ordained Bishop | Etienne-Bruno-Marie d'Arbou † | Bishop of Verdun, France | Bishop Emeritus of Bayonne, France |
| 53.4 | Ordained Bishop | Claude-Louis de Lesquen † | Bishop of Beauvais, France | Bishop Emeritus of Rennes, France |
| 64.3 | Ordained Bishop | Antoine de La Grange de Pons † | Bishop of Moulins, France |
| 68.7 | Ordained Bishop | Jean-François-Marie Le Pappe de Trévern † | Bishop of Aire, France | Bishop of Strasbourg, France |
| 63.5 | Ordained Bishop | Louis-Charles-François de La Tour-Landorte † | Bishop of Pamiers, France |
| Born | Giulio Marsili, O.F.M. † | Greccio | Bishop Emeritus of Sapë, Albania |
| 46.2 | Ordained Bishop | Vinzenz Eduard Milde † | Bishop of Litomĕrice, Czech Republic | Archbishop of Wien {Vienna}, Austria |
| 69.8 | Ordained Bishop | André-Etienne-Antoine de Morlhon † | Archbishop of Auch, France |
| 65.6 | Ordained Bishop | Antoine-Xavier de Neirac † | Bishop of Tarbes, France |
| 16 Jul | | Born | Giovanni Battista Alessio Tommasi † | Colle di Compito | Bishop of Massa Carrara, Italy |
| 20 Jul | 64.0 | Ordained Bishop | Charles-Alexandre de Richery † | Bishop of Fréjus, France | Archbishop of Aix (-Arles-Embrun), France |
| 67.4 | Ordained Bishop | Philippe-François Sausin † | Bishop of Blois, France |
| 23 Jul | 71.0 | Installed | Charles Brault † | Archbishop of Albi, France |
| Born | Alexander-Antonine Taché, O.M.I. † | Saint-Patrice de la Rivière-du-Loup | Archbishop of Saint-Boniface, Manitoba, Canada |
| 29 Jul | 60.7 | Appointed | Gilbert-Paul Aragonès d'Orcet † | Bishop of Langres, France |
| 55.2 | Installed | François-Antoine Arbaud † | Bishop of Gap, France |
| 31 Jul | 66.7 | Installed | Jean-Baptiste-François-Nicolas Millaux † | Bishop of Nevers, France |
| 1 Aug | 66.8 | Resigned | Simon Melchior de Petris † | Vicar Apostolic of Seckau, Austria | Vicar Apostolic Emeritus |
| 6 Aug | 77.0 | Died | Jean Labartette, M.E.P. † | Vicar Apostolic of Cochin {Cocincina}, Viêt Nam |
| 10 Aug | 91.7 | Died | François Mouchet de Villedieu † | Bishop Emeritus of Digne, France |
| 13 Aug | 73.0 | Appointed | Jacques-Alexis Jacquemin † | Bishop of Saint-Dié, France | Bishop Emeritus |
| 14 Aug | | Born | Gaspard Josephus Bottemanne † | Alhmaar | Bishop of Haarlem, Netherlands |
| 20 Aug | 83.0 | Died | Barnaba (Gregorio) Chiaramonti, O.S.B. † | Pope (Roma {Rome}, Italy) |
| 23 Aug | 35.8 | Appointed | Claude-Marie-Paul Tharin † | Bishop of Strasbourg, France | Bishop Emeritus |
| 30 Aug | 56.1 | Installed | Antoine-Jacques de Chamon † | Bishop of Saint-Claude, France |
| 31 Aug | 66.5 | Died | Giulio Maria Alvisini † | Bishop of Fossombrone, Italy |
| 5 Sep | 64.4 | Installed | Antoine de La Grange de Pons † | Bishop of Moulins, France |
| 6 Sep | 80.4 | Died | Bartolomé María de las Heras Navarro † | Archbishop of Lima, Peru |
| 10 Sep | 55.8 | Appointed | Jean-Joseph-Pierre Guigou † | Bishop of Angoulême, France |
| Born | James O’Connor † | Cobh, Ireland | Bishop of Omaha, Nebraska, USA |
| 12 Sep | 67.0 | Appointed | François-François Besson † | Bishop of Metz, France |
| 64.1 | Appointed | Jean-Marie-Dominique de Poulpiquet de Brescanvel † | Bishop of Quimper, France |
| 13 Sep | | Born | Francisco de Paula Suárez Peredo y Bezares † | Puebla | Bishop of Veracruz-Jalapa, México |
| 20 Sep | 24.2 | Ordained Priest | Joseph-Armand Gignoux † | Priest of Beauvais, France | Bishop of Beauvais (-Noyon-Senlis), France |
| 21 Sep | 26.2 | Ordained Priest | Ireneus Frederic Baraga † | Priest | Bishop of Sault Sainte Marie-Marquette, Michigan, USA |
| 23 Sep | | Born | Christophe-Etienne Bonjean, O.M.I. † | Riom, France | Archbishop of Colombo, Sri Lanka |
| 27 Sep | | Born | Louis Bel, C.M. † | Castelfranc, France | Vicar Apostolic of Abyssinia, Ethiopia |
| 69.6 | Died | Antoine-Eustache d'Osmond † | Bishop of Nancy, France |
| Born | Johannes Henricus Schaap, C.SS.R. † | Amsterdam | Vicar Apostolic of Dutch Guyana-Suriname, Suriname, Antilles |
| 28 Sep | 63.1 | Elected | Annibale Francesco Clemente Melchiore Girolamo Nicola della Genga † | Pope (Roma {Rome}, Italy) |
| Born | Aniceto Ferrante, C.O. † | Alisto | Bishop of Gallipoli, Italy |
| 41.7 | Ordained Priest | Tommaso Riario Sforza † | Cardinal, Priest of the Roman Curia - Other |
| 29 Sep | 24.0 | Ordained Priest | Michele Viale-Prelà † | Priest | Cardinal, Archbishop of Bologna, Italy |
| 30 Sep | | Born | Odon Thibaudier † | Millery | Archbishop of Cambrai, France |
| 1 Oct | 64.2 | Installed | Charles-Alexandre de Richery † | Bishop of Fréjus, France | Archbishop of Aix (-Arles-Embrun), France |
| Born | Alessandro de Risio, C.SS.R. † | Scerni | Archbishop Emeritus of Santa Severina, Italy |
| 5 Oct | 63.1 | Installed | Annibale Francesco Clemente Melchiore Girolamo Nicola della Genga † | Pope (Roma {Rome}, Italy) |
| 65.6 | Ordained Priest | Agostino Rivarola † | Cardinal, Priest of Roma {Rome}, Italy |
| 9 Oct | | Born | Antonín Ludvík Frind † | Lipové | Bishop of Litomĕrice, Czech Republic |
| 16 Oct | 71.2 | Appointed | Emanuel von Schimonski-Schimoni † | Bishop of Wrocław, Poland |
| 17 Oct | | Born | Grégoire II Youssef † | Alessandria | Patriarch of Antiochia {Antioch} (Melkite), Syria |
| 21 Oct | 89.9 | Died | Carlo Scribani Rossi † | Bishop of Piacenza, Italy |
| 22 Oct | 75.4 | Died | José Higinio Durán y Martel, O. de M. † | Bishop of Panamá |
| Born | Arnoldo Ipoly Stumer † | Disznos di Felzo-Zsember | Bishop of Banská Bystrica, Slovakia |
| 24 Oct | | Born | Giovanni Battista Laparelli Pitti † | Cortona | Bishop of Cortona, Italy |
| 25.2 | Ordained Priest | Ignatius Aloysius Reynolds † | Priest of Baltimore, Maryland, USA | Bishop of Charleston, South Carolina, USA |
| 25 Oct | | Born | Joseph-Maxence Péronne † | Laon | Bishop of Beauvais (-Noyon-Senlis), France |
| 29 Oct | 23.1 | Professed | St. Jerónimo Hermosilla, O.P. † | Member of Order of Friars Preachers | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viêt Nam |
| 2 Nov | | Born | Gesualdo Nicola Loschirico, O.F.M. Cap. † | Cardinale | Archbishop of Acerenza-Matera, Italy |
| 5 Nov | | Born | Pedro José Sánchez Carrascosa y Carrión † | Manzanares | Bishop Emeritus of Avila, Spain |
| 9 Nov | 47.4 | Ordained Bishop | Giacomo Monico † | Bishop of Ceneda, Italy | Cardinal, Patriarch of Venezia {Venice}, Italy |
| 10 Nov | | Born | William George McCloskey † | Brooklyn, NY | Bishop of Louisville, Kentucky, USA |
| 67.4 | Appointed | Joseph Chrysostomus Pauer † | Bishop of Sankt Pölten, Austria |
| 11 Nov | | Born | Manuel Mercader y Arroyo † | Barcelona | Bishop of Menorca, Spain |
| 79.5 | Retired | Irénée-Yves Desolle (Dessole) † | Archbishop of Chambéry, France | Archbishop Emeritus |
| 12 Nov | 41.9 | Appointed | Franz Xavier Luschin † | Bishop of Trento, Italy | Archbishop of Gorizia e Gradisca, Italy |
| 14 Nov | 27.5 | Professed | Clément Bonnand, M.E.P. † | Priest of La Société des Missions Etrangères | Vicar Apostolic of Pondicherry, India |
| 17 Nov | 61.0 | Confirmed | Gilbert-Paul Aragonès d'Orcet † | Bishop of Langres, France |
| 45.7 | Appointed | Michele Clari † | Archbishop of Bari (-Canosa), Italy |
| Appointed | Nicola Coppola † | Archbishop (Personal Title) of Nola, Italy | Bishop |
| 50.2 | Confirmed | Gustave-Maximilien-Juste de Croÿ-Solre † | Cardinal, Archbishop of Rouen, France |
| 56.6 | Appointed | Giovanni Francesco Falzacappa † | Cardinal-Priest of S. Maria in Trastevere | Cardinal, Prefect of the Apostolic Signatura |
| 60.4 | Confirmed | Augustin Johann Joseph Gruber † | Archbishop of Salzburg, Austria |
| 73.3 | Confirmed | Jacques-Alexis Jacquemin † | Bishop of Saint-Dié, France | Bishop Emeritus |
| 69.5 | Appointed | Louis-Sylvestre de La Châtre † | Titular Bishop of Himeria |
| 58.6 | Appointed | Ignatius Vincentius Matthy † | Bishop of Chelmno (Culma), Poland |
| 48.1 | Confirmed | Marie-Joseph-François-Victor Monyer de Prilly † | Bishop of Châlons, France |
| 38.7 | Appointed | Francesco di Paolo de Nadasd-Fogaras † | Bishop of Vác, Hungary |
| 52.1 | Appointed | Johann Friedrich Oesterreicher † | Auxiliary Bishop of Bamberg, Germany | Bishop of Eichstätt, Germany |
| 52.1 | Appointed | Johann Friedrich Oesterreicher † | Titular Bishop of Dorylaëum | Bishop of Eichstätt, Germany |
| 41.9 | Appointed | Tommaso Riario Sforza † | Cardinal-Deacon of S. Maria in Domnica | Cardinal, Priest of the Roman Curia - Other |
| 58.8 | Confirmed | Jean-François de Saunhac-Belcastel † | Bishop of Perpignan-Elne, France |
| 43.7 | Appointed | Francesco di Paola Villadecani † | Cardinal, Archbishop of Messina, Italy |
| 21 Nov | 38.0 | Appointed | Charles-Auguste-Marie-Joseph Forbin-Janson † | Bishop of Nancy (-Toul), France |
| Born | Nilo Isworoff † | Ruscink, Bulgaria | Bishop Emeritus of Smoleńsk, Poland |
| 24 Nov | 54.3 | Appointed | Giuseppe de Belansky † | Bishop of Banská Bystrica, Slovakia |
| 66.0 | Appointed | Jozef Bélik † | Bishop of Spiš, Slovakia |
| 67.2 | Confirmed | François-François Besson † | Bishop of Metz, France |
| 67.1 | Appointed | Domenico Orlando, O.F.M. Conv. † | Bishop of Catania, Italy |
| 56.6 | Appointed | Costantino Pleiewski † | Auxiliary Bishop of Płock, Poland |
| 56.6 | Appointed | Costantino Pleiewski † | Titular Bishop of Legio | Auxiliary Bishop of Płock, Poland |
| 36.1 | Confirmed | Claude-Marie-Paul Tharin † | Bishop of Strasbourg, France | Bishop Emeritus |
| 27 Nov | 53.9 | Died | Nicholas Joseph Archdeacon † | Bishop of Kilmacduagh, Ireland |
| 4 Dec | | Born | Juan Francisco Bux y Loras † | Fortanete | Auxiliary Bishop of Toledo, Spain |
| 7 Dec | | Born | Juan María Ambrosio Huerta † | Lima | Bishop of Arequipa, Peru |
| 12 Dec | | Born | Tomasz Teofil Kulinski † | Camielvio | Bishop of Kielce, Poland |
| 15 Dec | | Born | Bernard John Joseph McQuaid † | New York | Bishop of Rochester, New York, USA |
| 17 Dec | | Born | François-Albert Leuillieux † | Saint-Omer | Archbishop of Chambéry, France |
| 20 Dec | 24.0 | Ordained Priest | Joseph Crétin † | Priest | Bishop of Saint Paul, Minnesota, USA |
| 24.3 | Ordained Priest | Jacques Jeancard, O.M.I. † | Priest | Auxiliary Bishop Emeritus of Marseille, France |
| Born | Dominic Manucy † | Saint Augustine, FL | Vicar Apostolic of Brownsville, Texas, USA |
| 22.7 | Ordained Priest | Guillaume-Clément Masson, M.E.P. † | Priest of La Société des Missions Etrangères | Coadjutor Vicar Apostolic of Southern Tonking {Tonkino Meridionale}, Viêt Nam |
| 23.2 | Ordained Priest | Enrico Orfei † | Priest | Cardinal, Archbishop of Ravenna, Italy |
| 21 Dec | 84.8 | Died | Domenico Spinucci † | Cardinal, Archbishop of Benevento, Italy |
| 22 Dec | 57.9 | Appointed | Jean-Paul-Gaston de Pins † | Apostolic Administrator of Lyon (-Vienne), France | Apostolic Administrator Emeritus |
| 24 Dec | | Born | William Hugh Joseph Clifford † | Irnham | Bishop of Clifton, England, Great Britain |
| 26 Dec | | Born | Eusebio Semprini, O.F.M. † | Dongo | Vicar Apostolic of Southern Hunan {Hu-Nan Meridionale}, China |
| 27 Dec | 26.0 | Ordained Priest | Melchior Ferdinand Joseph von Diepenbrock † | Priest | Cardinal, Bishop of Wrocław, Poland |
| 28 Dec | 52.2 | Ordained Bishop | Johann Friedrich Oesterreicher † | Titular Bishop of Dorylaëum | Bishop of Eichstätt, Germany |
| 30 Dec | 85.9 | Died | Tiberio Cortese † | Bishop of Modena, Italy |
| 31 Dec | 62.0 | Died | Paolo Leardi † | Apostolic Nuncio to Austria |